Clam-shell bucket.



- N. P. E. ANDERSEN.

'GLAM SHELL BUCKET. APPLICATION FILED JUNE 28, 1909.

1,096,21 3, Patented May 12,1914.

3 sums-slum: 1

771', tnesses:

' N. P. E. ANDERSEN. GLA-M SHELL BUCKET. APPLIQATIQN. FILED Jrmnzs leos.

Patented May 12, 1914.

s sn'aMs-snnm: 2.

Inventor.

N. P..'E. ANDERSEN.

GLAM SHELL'BUGKBT.

APPLIOATION FiLED JUNE 28, 1909.

- at nted May 12, 19,14.

'- 3 SHEETS-SHEET a.

I Inventor:

I h l di d l li dhi.

NILE P. E. ANDEBSEN, F MILWAUKEE, WISCONSIN, ASSIGNOR, BY IVIESNE ASSIGN- THENTS, T0 .PA'WLZNG AND HAENISCHFEGEB CGMPANY, OF WEST MILJVAUKEE, 'WISCONSIN, A GSREQRATION OF "WISCONSIN.

CLAN-SHELL BUCKET.

oaeeie.

T 0 all whom it may concern Be it known that I, Nins P. E. ANonnsnN. citizen of the United States, residing at Milwaukee. in the county of Milwaukee and State of Ti isconsin, have invented certain new and useful Improvements in Clam- Shell Buckets, of which the following is a specification. reference being had to the acdrawing. forming a part out disturbing the connections oi the scoop operating rope. and generally to improve the construction and operation ofdevices of this class.

lt consists in the construction. arrange ment and combination of parts hereinafter particularly described and pointed out in the claims.

In the accompanying drawing like characiers designate the same parts in the several figures.

Figure '1 is a sideelevation of bucket embodying; the invention; Fig. 2 is an end elevation of the same as viewed from the right with relation to Fig". 1; Fig. 3 is a vertical longitiulinal sectiiin on the line 8 Fig. Fig. e is a detached side'elevation ot the auhnnatic couplin r for connecting the lower pulley block avith the scoops. showing the parts as they: approach locking position; and Figs. and dare detail views showing means for mainiiaining the lower coupling member in 1e roper relation to the other memb r Ior engageznenfi therewith in different pos :ions of the scoops, Fig. 5 being a vertical section on the line 5, and Fig. 6 a partial horizontal section on the line (3 6, Fig.

The bucket. comprises two scoops a, the upwardly extended sides of'whicl are pivotally connected at thecenter of the bucket by a cross shaft 7). A. rope guide or head 0 is connected with the sides of the scoops adjacent to their outer ends by links d and e,

which are pivoted at their lower ends on cross-rods f passing through and connecting the sides otihe scoops. The links (2 are Specification of Letters laten'z.

Application filed June 28, 1909.

latented May 12. 1914.

Serial No. 504,673.

formed or provided at their lower ends at an angle thereto with arms 9. which are connected at their upper ends by a cross rod )4.

A. pulley block e is connected at the ends with the arms a by links j which are pivoted at one end to the cross rod h and at the other to the ends of a pin or shaft is passing transversely through the pulley block parallel with the rod 71. The bucket is provided with an automatic coupling for connecting the pulley block 27 with the scoops between the cross rods j for closing the bucket when the block 2' is drawn up by the operating cable to the guide 0 hereinafter explained. This coupling may consist as shown, of :1-

' hook Z formed with or attached to the block 7 0 i. and a cross pin or strike in carried by a sleeve '12. 'WlllCll is revolublv mounted on the cross shaft 5. The face or hight oi": the hook.

- which engages with the pin or strike m is inclined downwardly. as shown'in Fig. 3, so that the pin or strike will when released, slide therefrom and permit the separation of the menr-Jers oi the coupling. Below its point the hook is formed with a reversely inclined or curved guiding face 0 adapted by engagement with the pin or strike m in the descent of the pulley block '1'. as shown in Fig. l, to direct the parts into locking position, as shown in Fig. 3. The hook is formed or provided with a counterweight p which tends to rock or swing it into engagement with the pin or strike m. Atits ends the pulley block 2 is provided with stops 9 which by engagenent with the links j as shown in Fig. i, hold the gaining face 0 of the hook as it descends. in the proper position to engage \i'ith the pin or strike m. The hook Z is rigidly attached to the block z, and is capable of rocking or swingingtherewith on the pin A latch r pivoted at s in a. recess of the block i, is adapted by engagementwith one side of the pin or strike m to hold the hook thereon. as shown .in Fig. 8, counteracting 3.00 the tendency of the pin or strike to slide elf from the inclined face ofthe hook, The latch is shown as formed or. provided with w an arm t with which a 1-opepassing over a pulley above may be connected .for'lifting ion it out of engagement with thepin or strike m. 1k is also shown as provided =with. a. projection n adapted to engage with the;

wit the bucket to open when the pulley block '2 1s drawn up to -the rope guide 6, as shows;'

in Fig. Either of the devices above mentioned may lie-employed the 'letel release the pin or strike m from the hook Z and thus permit the buolree to open, or e sep-- arate stop or trip may be provicleri at the desired point in the path of the projeotioil 111..

To hold the pin or strike 6% in the proper relation to the hook Z for erigegemene iliere With i'ri CilHETBHt pOSlUOH-S oi the scoops s e guide plate a formed Willi slots y intersecting each other at right ei'lgles,v as shown in Fig. 5, is interposecl between the sides of the scoops a on one side of she bucket as shown in ll, 2, enl 6 Pine 2 secured in the adjoining sides of the scoops a. and engaging Wiizh the sloi z, equidisienl',

from on opposite sides-from the shaft 5 which moses loosel three lithe sioi 'l iioici the letter eonsl-onmy parallel wits {st-reigns line mssmp' ihroiwli axle of the 3i and the pivot connection between the oper of the links a? and e, as seen in i l,

whotei er the posieion of the scoops moloei A pin 3 held, in upwardly projecting arm 4 on the sleeve 92. porollel therewith, is guided in the upper port oi? the slot 3/ mil thus holds l e min on s m.- in. the smile plane with file slmifi Z mm pivo'; QGEHNEC- tion between. the upper enis Ashe links and e and in prjoper. position be erigegeel by the hook Z anal to close the iiuolrel; whet ever may be the relative pos'. "oiis the scoops to each other to the l The sleeve n is connected J l j oincecl links 5 with the endsof e ore 6 passing through t'he rope guirle a eiiil iihe spread or opening of'the scoops is time limited.

The rope guide 0 and the pulley ol areeonnecterl with the operating rope i such a way that when the rope is eu'bjeciieo; to lifting strain the pulley block will clrown up and held against or close iJo the rope guide, and if the pulley bloelr is -oon necked by the coupling with the sleeve 92, the ,scoopswill be clrawntogetlier end the bucket closed. The rope guide or upper pulley block a and the lower pulley ioloek 2' may be provided with more or less pulieys or sheaves en'cl connected in various lay the operating! rope fie-cording to the required; orddesireri ratio of the Iliiting power to "the power exerted through the pulley block if to close the. seoops or bucket. illitli'tlie or rengement shown the lifting pull oil the rope 7 is multiplied four eimes. ,ziioeordliog to this arrangement, the giiirle or pulley block 0 is provided with two pairs of pulleys or sheaves 8,v ourneleci on the pine, and two guiole pulleys sheaves 9, arranged. to direct the two stretches of he rope on which the bucket is suspended centrally to the two inner, pulleys. ihe pulley block i is provided with iwo pairs of pulleys or sheaves l0, and each stretch of the rope on either sieie oi? the longibudinoi center of the bucket passes from. the pulley Q Gown around one or the pulleys 8 and one of the pulleys ll thence ops eerily over the other puliey 8, thenoe riowiiwemlly orouml other puliey 10, the end being atieohedes shown in Fig. l, in guide or pulley block For temporary eizi eeliment to and oso-wlth creme other hoisting device, lnwo' l from the giziele or goalie-y liloelr o ero'o'od' eompeiisoc. iiiliey ill in a pulley bio l-r or. suspension member 12 having; a, loop or boil l3 meiil; Wiixli the hooir' on the hoisting el z door rope e creme or oelier hoisting leviee iiiclioealzerl in Fig. The hiiclre s may however, be poririoiieritly erm nest-oil with the lioisiiiig air i o o QZ'HZ'IG' on:

hoisting apparatus by m oi ing like so opersi rope '2 some i saiel oirum. With ope-mom shows. in which ihe bucket sospemled o We sirelclies oi rope, both male may e'tmeloeii to the bloom of the ore-x1e or lioist, and the guide or pulley block 100 0 may i with e compensating pulto eliepulleys 8 'ljhe" Ween the two outer pub lie pro". r?

eoiiriii-iori in "which it is shown in.

v I 1 M i 1g, 1, scoops being spread or ooen amelllie'bloelr held. up against the goirle or loloeli 0 When the, cutting of the scoops some in confieei with the groom? or 110 ineieriei ie be taken up, enci the operating; rose "2'. is sleelzenecl the block -22 descends, moving; sway "i the guide or upper block e. in its desoerie, While the scoops a and the goirie or upper block 0 remain at rest, it do 115 w seriioes lzlie are of o cirole, being guided by e'l nlrs j mto POSIUOR to enable the cou- {5 g hook to engage with the coupling joi i or sirilre m, as indicated by riotteel lines in Fig. l. sleeve 01, the guiding; face 0 of the hook is brought into ongageznene with the pin or strike m swinging the hook with the block to the right, or toward the cross rocl 7L, until the pifoirrt of the hook slips over aml posses 126 below said pin or strike. The toe of the latch?" is pus upward by the pin or strike, permitting the point of the hook to be cerriecl underneath lo by theweiglrl; p, Whereupon the leteh drops baclrinio place against 186 z Qeriiiion of the bucket it is low- 3.05-

Af's the block epproaclies ihe 12o the llll i'l'i. t

' strike. in

the side of the pin or strike, as shown in Fig. 3, thereby locking the members of the coupling in engagement. The rope 7 being woun i pulled up, operates vfirst to draw up id the guide or upper block and lifting the sleeve n with the sha t F), it draws the scoops I; together and closes the bucket, as shown in Fig. When the lower pulley block i is thus brought into close proximity to the guide or upper pulley block (1 and the bucket closed,

a further draft on the rope 7 lifts the l-nicket with its load, and when it reaches the point of discharge the sleeve at with the cross shaft Iris released by a pull on a rope attached to the leve a or to the lever in or by a stop in the pa oi the projection u operating to lift the latch P out of contact with the cross pin or strike m. lVhen this occurs'the pin or strike on slides oil from the inclined face of the hook Z, permitting the sleeve 92 with the shalt Z) to descend and the scoops a to spread, as shown in Fig. 1. 5

While the pulley block i in its descent to pick up the sleeve n with the cross shaft Z) when the scoops are spread and the hucket'is open. describes the arc of a circle, as indiiated in 1, when it is coupled with said sleeve, and is titted, it trav'els in a substantially straight line between toe shaft Z) and the cross pin in closing the bucket, an intermediate position of the links (Z, arms {1 and links j being indicated in Fig. 1 by dotted lines 6. f, it and 7a. The guiding connections of the pulley block 2' and pivoted hook X with one of the scoops a. consistin of the arms of the links (Z and the links y, and the guiding connections of the pin. or strike in with the two scoops consisting of the slotted plate .2 and pins 2 and 3: are so designed as to insure proper en.- gagronient of said hook with said pin or ase the scoops in their descent upon the ground or material to be taken up are not spread r opened to the full extent permitted by the chains 5 and to maintain 1g parts, oi said hook and pin or a constant aiigular relation to the pu-l .ho operating rope 'l' exerted in the direc ion of a straightline passing through the shaft 7) and the pivot connection betn-een the links I and e during the entire ug movement of the scoops Leer occasional or tein tiorary use with a crane or other hoisting ap 'iaratus, as for example for scooping up and conveying sand in foundry, the bucketis provided with a suspension member 12, which is pern'ianently connected with the operating rope 7 and is engaged with the-lifting book of the crane or hoist, as indicated in Fig. 2, the operation of the bucket being the same 'as when the rope is directly and permanentlya'tllazhed to a crane or hoist. By this means the bucket may be easily and in oi? .adjacent to their .without departing from the principle and scope of the invention.

1 claim:

1. In a clam shell bucket the combination of scoops pivotally connected with each other, a rope guide, links connecting said guide with'the outer parts of the scoops, a pulley block movable between said rope guide and the pivot connection between the scoops, a guiding connection between said pulley block and one of the scoops adapted to direct said block in a substantially rectilinear path toward the rope guide in closing the bucket, an operating rope connecting said guide and block and adapted when subjected to liftingstrain to draw them together. and an automatic coupling for detachably connecting said block with said scoops adjacent to their pivot connection. with each other. one member of said coupling being pivotally connected with said links and the other ii'votally connected with the two scoops and having a guiding con nection therewith whereby it. is held in said rectilinear path in any position of the scoops relative to each other and to said guide.

:2. In a clam shell bucket the combination ot" scoops pivotally connected with each other, a rope, guide and scoop supporting head, links connecting said guide and head with the outer parts of the scoops, a pulley block movable back and forth between said guide and head and the pivot connection between the scbops, a jointed link guiding connection between said pulley blofzk and the outer part of one of the scoops, adapted to confine said block in a substantially straight course in closing the bucket, an operatingrope connecting said guide and block and adapted when subjected to lifting strain to draw them together and close the bucket, and automatic means for detachably connecting said pulley block witl the scoops pivot connection with each other.

3. In a clam shell bucket the combination block and the scoops between their connections with the rcpe guide. I

l In a elem shell bucket the combii'laticn cl piwalally connected sccops, a rope guide connected with said scccps, relatively movable pulley block having c guiding c0nfiGCtlOR with a part of {he bucket, ace-pereating rcpe connecting said guide anal block and adapted when subjected to lifting aim. inc drew lllem together, and ceugll lg e, detachebly connecting said. blCGli scoops between theie ckmneccicns W guide and camels-ting e hock be. h dcwmvarcily inclined biglzt, :22 member adapted to engage will: said heel: an l latch fer lwlclinfl said 1118?. on the of the heel; one member said ccuplz. being pivoted s0 as $0 into and mil", 0: engagement with the c member clam shell leacxel: che cc nation of pivot-bell ccmqec tecl cc-caps, mile guide ccncecte l scecps e, ielecively mcv able pulley block hey-v11 guiding ccnncclion with e. cl the bucket, an eperexting 'mpe zze'cnectizig said geitle and blecl; uni adapted "when subjected lifting stein to clears inhem together, me e ceu fling for demchzilaly (fermenting eairl deck and i e ectmpebetween their eennectienc will; gnlile and consisting strike pivot mcuneecl on the pivot ccmxecclen between ehe scccpe, e slcttccl guide clefie ccnnectccl with the ecccpe end strike and edepied tc bold line in pcsitieze fer engag ment with (the other member cf cenpling in any position cl. the escape relative 230 each ether, pivcielly Hlfllll'lifii heel: lemming downwardly inclined bi b and e reverely inclined gnicllfig l e e *[l the dire-eel hock inte engagement "it the strike am latch for balding the strike 0n the big et of the heck,

6. In e clam shell bucket the ccmlaicetien cf pivotelly connected sewage, rope ecxmecled with seicl scccps m1 cppcclte of their pivot. ecnnectwn 'lEVlllll each smear a pulley .hloclchaving a, gelling conceezien with the bucket and provixledrwil-b-e coupling mcmbelg epemting :a epe concealing said g; .de end block and mllentecl when eub jectefl to lifting '11 tejclrew ll-"1cm 111egather, a ccupl membcrsmeuntecl em like plvcb connectlcn between the escape and l ncvehle enguiarly relative tc basin seceps endmeans :fer guia'ling umlhelcling sei l "El; memionecl sampling member in the path cl em other coupling member for engagement fiherewith in different angular positions elf the scoops.

7. In a clam. shell bucket the cc mbinaficn cf pivctelly connected scoops, e Pepe guide ccnncclerl. will; like scocps, having gulalin 'g :1 mil PI'OVlLlBLl will) a coup connected with scccps m 02 ecnnecti tm with each Ollli? l0 e-utcznstically en a a el /circa latch fer lLOlCl scald hock an Wei-cling Pep guide and. block and ml", {'0 llfzing stmin l0 lye-W 1 k a movable trip meuntcrl cc cell! adapted to operate said latch Sl'illiQ from che heck.

S. In clam shell bucket the 1301*" of pivctnlly connected scoe es, concealed with the scccps 0n 0 cf ell" ph'e'lz ccnn pulley block, a guiding link con block with one of the scmvps m ce connecting said guide edep' cl, when subject draw-. them tcgct-her see a coupe ne inc; pulley bloc": will: film, weeps, consisting of a strike recanted f c ccnneetien of the scccg'ts 11ml mez'eli lafly relative cc col-l1 scoc'ps, means ing and holding s" in i'l'le varying any between alnl'ereni; pcsieicns thereof and ally connected h serial g'nidn having a guiding face fer :li engagzcmenc with 'bhc strike ccm'lterweigl'lted and 3l'0'"iefl6 l W21 fer engagement will: 5% gal-ll" halal the jgxjliding face 0;! iicn m eeiiperale with 9 In a clam shell loucl scoops, :2. cross shaft 3' H 37 mil scoops: at fzc center.- :mrl'upp the bucket. e rope guide 'p 'c rle leys, links ,lelly cmime with said scccps on oppcsilesir" shaft, the lower encls cf the links-cl; of the bucket having; errcs a pl'zlley block cemi cliecl with mfms, an operet" repe 7e. ercunzl the pulleys in seed genie and adapted when snbjecfie'cl $0 llfizi 30 draw them together, an eu. cling-consisting of awe members by the pnl'ley black and the e: :21 my cross shaft, a, latch fez nclclmg said here e egement eml means 230: 

